Melanie Caldwell, a Tauranga resident and one of the organisers of the protest, said she thought the support had grown since the election.
"I think the sense of urgency is because John Key got back in so it's a real threat now... It's a real fear now."
She wanted people to share their messages and join the protests.
"I think the more people are thinking 'this is real, this is actually happening', and share that on social media, the concern will grow exponentially."